Their email sync is definitely superior to Google Apps, and now that they're adding DAV support the only thing really holding me back from switching my personal

Their email sync is definitely superior to Google Apps, and now that they're adding DAV support the only thing really holding me back from switching my personal domain email over to Fastmail is email tagging. Gmail is, as far as I can tell, the only show in town for having email tags that sync across the server and client (unless you're in Exchange, but that's suboptimal for my personal use), and that's how I do pseudo-GTD to keep track of actions in my email. Edit: I have a secondary email account through Fastmail where I don't need the tagging ability, and have been very pleased with the service. If you don't need tagging, I think it's worth the switch. They're clearly active in improving the service, while Gmail feels like it's moribund.